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Message-ID: <44010.166.70.238.43.1222928236.squirrel@webmail.wolfmountaingroup.com> Date: Thu, 2 Oct 2008 00:17:16 -0600 (MDT) From: jmerkey@...fmountaingroup.com To: linux-kernel@...r.kernel.org Subject: do_filp_open fails to detect dentry revalidate of 1 and crashes On assignment of a negative dentry, do_filp_open will crash with an oops in do_sys_open because do_filp_open returns "1" from revalidate rather than properly detect a negative dentry which has a dentry revalidate function before the file actually exists. Easy to reproduce. Create negative dentry and attach a revalidate function which returns 1 instead of 0 on non-existent file entry. The convoluted code in do_filp_open does not detect dentry errors in all cases properly. Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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